Those HDMI-over-Ethernet devices have very little to do with Ethernet-over-HDMI.
Unless you really boosted the gain, they could really only do about 30m reliably. What you wanted to buy is HDMI-to-HDSDI and HDSDI-to-HDMI converters, which could do much longer over RG59 (and much longer over fiber).
Unless you really boosted the gain, they could really only do about 30m reliably. What you wanted to buy is HDMI-to-HDSDI and HDSDI-to-HDMI converters, which could do much longer over RG59 (and much longer over fiber).